Water → 5-Nitro-1,3-benzothiazol-2-amine

Participants

Reaction Conditions

Reaction Steps

11.71 g of 2,4-dinitrophenyl thiocyanate are added, over the course of 15 minutes, to a solution of 7.6 g of thiourea in 50 ml of dimethylformamide at 150° C. The mixture is stirred at 150° C. for a further 2 hours, and the product is discharged into 500 ml of water, and the solid is filtered off with suction and washed with water. 11 g of crude 2-amino-5-nitrobenzothiazole are obtained, its identity being confirmed by TLC comparison with authentic material.

Provenance & Evidence